An adaptive VSG control strategy based on online grid impedance measurements

被引：0

作者：

Zhang Q. ^{[1
]}

Li Z. ^{[2
]}

Cai X. ^{[1
]}

Rao F. ^{[1
]}

机构：

[1] School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai

[2] School of Information Science and Technology, Donghua University, Shanghai

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 21期

关键词：

Adaptive control; Hardware-in-the-loop; Power grid strength; Primary frequency regulation; Virtual synchronous generator;

D O I：

10.19783/j.cnki.pspc.181522

中图分类号：

学科分类号：

摘要：

Virtual Synchronous Generator (VSG) requires to be shifted between grid-connected state and micro-grid state, which have different grid strength. Aiming to keep precise Primary Frequency Regulation (PFR) ability and dynamic response characteristics of VSG, a modification of VSG control loop is proposed based on the small signal analysis and generalized root locus analysis to improve the precision of PRF by introducing differential element to the virtual damping, and an adaptive virtual damping optimization method is proposed to keep the dynamic response characteristics constant under different grid conditions. A micro-grid model is established on the Real Time Digital System (RTDS) and DSP united hardware-in-the-loop (HIL) platform, which contains PV, BESS and the diesel generator, experiment results demonstrate the effectiveness of the proposed method. © 2019, Power System Protection and Control Press. All right reserved.

引用

页码：117 / 125

页数：8

共 23 条

[1]

Lu Z., Sheng W., Zhong Q., Et al., Virtual synchronous generator and its applications in micro-grid, Proceedings of the CSEE, 34, 16, pp. 2591-2603, (2014)

[2]

Tao L., Cheng J., Wang W., Et al., Methods of parameter design and optimization in virtual synchronous generator technology, Power System Protection and Control, 46, 12, pp. 128-135, (2018)

[3]

LOIX, Participation of inverter-connected distributed energy resources in grid voltage control, (2011)

[4]

Zheng T., Chen L., Chen T., Et al., Review and prospect of virtual synchronous generator technologies, Automation of Electric Power Systems, 39, 21, pp. 165-175, (2015)

[5]

Zhong Q.C., Weiss G., Synchronverters: inverters that mimic synchronous generators, IEEE Transactions on Industrial Electronics, 58, 4, pp. 1259-1267, (2011)

[6]

Shi R., Zhang X., Xu H., Et al., A control strategy for islanded photovoltaic-battery-diesel microgrid based on virtual synchronous generator, Transactions of China Electrotechnical Society, 32, 23, pp. 127-139, (2017)

[7]

Qin X., Su L., Chi Y., Et al., Functional orientation discrimination of inertia support and primary frequency regulation of virtual synchronous generator in large power grid, Automation of Electric Power Systems, 42, 9, pp. 36-43, (2018)

[8]

Xu H., Zhang X., Liu F., Et al., Virtual synchronous generator control strategy based on lead-lag link virtual inertial, Proceedings of the CSEE, 37, 7, pp. 1918-1926, (2017)

[9]

Zhang B., Yan X., Huang Y., Et al., Stability control and inertial matching method of multi-parallel virtual synchronous generators, Transactions of China Electrotechnical Society, 32, 10, pp. 42-52, (2017)

[10]

Li M., Wang Y., Xu N., Et al., Virtual synchronous generator control strategy based on bandpass damping power feedback, Transactions of China Electrotechnical Society, 33, 10, pp. 2176-2185, (2018)

← 1 2 3 →